Electromagnetic valve



April 9, 1929. 0/0. MARKS ELEdTROMAGNETTC VALVE Filed April 50, 1927 2 Sheets-Sheet l Mnvs'ss April 9,1929; O, MARKS 1,708,276

ELECTROMAGNETIC VALVE Filed April 50 1927 2 Sheets-Sheet 3 20 9 v 9 FZ' Ji 18 j 21 19 2.1 2 21 zz 14 14 1 14 14 14 10 i H 12 15 15 I6 1 '38 1 12 X9 m 4m. 45 A4 Inn/V1012 W ITNEss v Patented Apr. 9, 1929.

UNITED STATES PATENT OFFICE.

DONN oTTo MARKS, o Los ANGELES, CALIFORNIA, ASSIGNOR To GEORGE GARTLING,

, or LOS ANGELES, CALIFORNIA.

' ELECTROMAGNETIC VALVE.

Application filed April 30,

This invention relates to an improved novel automatic valve positioning device, and indicating means for the valve plug, and an objectof the invention is to provide a device of the character stated in which novel accessibleswitch contacts are provided.

Another object is to provide a novel and simple positioning device for the valve plug actuating rod.

A feature of this invention. comprises a novel and simple valve plug retaining means.

Advantages of the invention include a device of the character stated whichis simple in construction, effective in operation, and the parts of which are readily accessible for inspection and repair and which maybe readily assembled with a minimum amount of labor.

Other objects, advantages and features of 0 invention may appear from the accompanying drawing, the subjoined detailed descrip tion appended claims.

The accompanying drawings illustrate the invention. Figure 1 .is a side elevation of the position ing device on a valve.

Fig. 2 is a sectional view on line m, Fig. 1. Fig. 3 is a sectional view-on line a Fig. 4. Fig. 4 is a sectional view on line :12, Fig. 2. Fig. 5 is a sectional view on line 00, Figs. 1 and y Fig. 6 is the wiring diagram for my device. Fig. 7 is a plan view of the valve plug retaining washer.

.Fig. 8 is a fragmentary side elevation of -my device.

, Fig. 9 is a view similar to Fig.2 as taken on the line m, Fig. 12, showing the plunger as partially depressed and the camas moving the plug from high-flow to the shut-ofi' posi tion.

Fig. 10 is a view taken on line m", Fig. 12, showing the plunger as fully depressed and the cam and plug in shut-01f position.

Fig. 11 is a view similar to Fig. 10 showing the plunger as being restored to elevated position and about to be-reset for subsequent rotational movement of the plug.

Fig. 12 is an enlarged sectional plan view, similar to Fig. 5 showing more clearly the valve portage and the means for selectively varying gas flow through the several ports.

My valve positioning device 1 is mounted 1927. Serial no. 187,747.

on a valve and operates a plug 3 in the valve. The device 1 comprises a shell 4 which is mounted concentric with the plug 3 on a ring 5 formed on the valve 2 and is secured to said an extension rod 10 depends-from the core 9.

' The rod 10 is guided by a nut 11 screwed into the lower end of the tube 8. A spring 12 is positioned between the nut 11 and core 9 to urge said core and rod 10 upwardly.

Windings 13 are spaced between the shell 4,

tube 8 and heads 6', 7. Y

Terminals 14, 14 extend through the head 6 to which the electrical leads are secured to pass current to the windings and causethe.

core 9 to move downwardly for a purpose to be further described. a I 1 The plug 3 is formed with teeth 15 on the upper end thereof, said teeth having cam,

surfaces 16 on one face thereof.

The rod 10 is provided with a pin 17 on the lower end thereof, which engages the cam surfaces 16 to rotate the plug 3. t In order that the pin17 may always b properly positioned to engage the cam surfaces 16, a groove'18 is formed in the core 9 into which a screw 19 extends.

i This screw is threaded through the tube -8- into said groove. As the core 9 is depressed,

a surface 20 is engaged by the screw 19 which I carries the core a fraction of a revolution in the direction of rotation of the plug 3, and' carries the screw against a vertical surface 21. As the core 9 is returned by the spring 12 the screw 19 moves down the surface 21'an engages a cam surface 22 at the lower end of the groove 18 which moves the core 9 a fraction of a revolution counter to the rotation of the plug 3, and thuspositions the pin 17 so that it will always. engage the surfaces 16.

A fibroussleeve 23 is mounted in the ring 5, and spring contacts 24, 25 are mounted in the sleeve.

Terminal contacts 24, 25 respectively, and extend through the sleeve 23. Notches 28, 29 are cut in thevalve 2' and shell 4 respectively to pernit the passage of the posts 26, 27.

The post 27 is connected to alamp 30 posts 26, 27 are attached to the I through a a lead 31, and the lamp is also conlead 32 extending to the bat- In-the drawings the lamp may be regard- I ed as redand the lamp 34, as white.

A switch 36 is provided in the lead 32 which lead also extends to one of the terminal posts 14 of the windings 13 to energize said wmdings and actuate the core 9.

The plug 3 is provided with four pins 37 37 and 38, 38 which pins are adapted to on age the contacts 24, respectively to lig t the lamps 34, 30.

" the plug 3, thus securely holding saidplug in osition.

can'pass through the valve,

lot the plug, extended through The plug 3 is rotated 90 more or less each time the core 9 is actuated; and, starting at the ofi' position where the pins 37, 37 38, 38, do not engage the contacts 24, 25, and no gas and neither lamp is lighted. Thefirst rotation of the plug carries the pin 37 onto the contact 24 to light the white lamp 34 to indicate a small amount of fluid passing t rough the valve 2.

A second rotation carries the pin 38' against the contact 25, and the pin 37 away from the contact 24 thus lighting the red lamp 30 and extinguishing the white lamp 34 to indicate a medium flow. The next rotation carries the pins 37, 38 against contacts 24, 25 to light both lights 30, 34 and to thereby indicate a high How of fluid through the valve.

Longitudinal movement of plug 3 is pre vented by a split washer 40 which is held under the sleeve 23, and enters a groove 41 in s best shown in Fig. 3, the valveplug 3 is of cylindrical form; is directly seated in the valve casing 2 and has formed integrally therewith the teeth 15 having camsurfaces for plug rotation,

and has the switch pins 37, 37 38 and 38 built onto the teeth.

The undercut groove 41, in the plug body, beneath the teeth, provides for a facile introduction of the halves of the split washer 40, after a seating of the'plug.

. The switch proper, is constructed as a unit and comprises the fiber sleeve 23, with the contacts 24 and 25, and terminal posts 26 and 27 assembled on the sleeve, and may be placed on the valve fully assembled. I

The means carried by the core for rotation consists nly of a simple pin I rod of the'core, and the positioning means for tllie pin consists only of a simple pin and cams ot. I

As best shown in Fig. 12, the seat 42', of the therein,

cam surface in the end of the extension valve is formed as a cylindrical bore, the walls of which partition the inlet 43 from the outlet 44 and through which is formed valve ports 45, 46 and 47 and a by-pass 48 for gas movement from the inlet to the outlet. 7

The valve-plug 3, as shown is tubular for a portion of its length; is open bottomed for communication with the bore of the valve seat and provided with a single port 49. The ports 45, 46, 47 and 49 are of like capacity so that the single port of the plug may efli'ectively operate with any selected port of the seat. Gas flow through the several ports of the seat is adjustably' regulated by means such as, the screw-plugs 50, which are threaded through thevalve body.

I claim 1. In combination, a valve having a lug -therein, teeth on said plug; a tube in a 'neteeth and rotate said-plug as the core is deand means on said core adapted to.

pressed; move said core to position said engaging means to engage the teeth; said last named means comprising a core having a groove a screw entering said groove, and a the groove adapted to be enteeth and rotate said plug;v

d engaging means to engaged by the screw, substantially as described.

3. In combination, a valve havinga plug therein, teeth on said plug, atube in alinement with said plug, a core-in said tube, means on said core adapted to engage said teeth and rotate said plug as the core is depressed, means on said core adapted to move said core to positionsaid engaging means to engage the teeth, a split washer engaging said plug, whereby longitudinal movement of said plug is prevented; and meansto retain said washer in the valve.

4. In combination, a valve having a plug therein, teeth on said plug, means adapted to engage said teeth to rotate said plug, a sleeve concentric with said plug, contacts on said sleeve,,me ans on said plug adapted to engage sai d contacts, and signal means connects ed to sand contacts.

5. In combination, a .valve having a plug therein, teeth on said plug,'means adapted to engage said teeth to rotate said plug, a sleeve secured to said valve concentric with sa d plug, contacts on said sleeve, pins on said plug adapted to'engage' said contacts;

and signal means connected. to said contacts. I

6. In combination, a valve having a plu therem, teeth on said plug, means adapted to engage said teeth to rotate said plug, a sleeve ,concentric with said plug, contacts on said sleeve, means on said plug adapted to engage said contacts, and signal means connected to said contacts, a split washer engaging said plug whereby longitudinal movement of said plug is prevented, said washer being posi-' tioned under said sleeve and retained in posi tion thereby.

7. In combination, a valve having a plug therein, teeth on said I plug, a tube in alinement with said plug, a core in said tube and slidable therein, a rod depending from said core, spring means engaging said core ada ted and arranged to urge sa d core upward y, a pin in said rod adapted to engage said teeth to rotate said plug when the core is depressed, said core having a groove therein, a screw extending through said tubeihto said groove, said groove having a cam surface to be engaged by said screw to rotate said core and position said pin over the teeth;

In testimon whereof, I have hereunto set my hand at 10s Angeles, California, this 25th day of April, 1927.

DONN OTTO MARKS. 

